The ELR(earth leakage relay) monitors high current rating with CBCT or other CTs. It transmits a signal to trip the circuit breaker or contactor. ELCB(earth leakage circuit breaker) monitors low current rating without CTs and trip circuit breaker itself.
Technology of Electrical Automatic
Digital Earth Leakage Relay
– Sensitivity protection against a wide range of earth leakage fault currents
– Customized for specific applications with options for logos, features
– DIN rail mounted designs for easy installation
Blue Jay Digital Earth Leakage Relay
Blue Jay’s digital earth leakage relay provides highly effective earth leakage protection for electrical systems. Working in conjunction with a CBCT, it will trip the circuit breaker when earth leakage goes above the programmed threshold.
ELR-4MA AC Digital Earth Leakage Relay
Blue Jay’s ELR-4MA earth leakage protection relay, also known as a Type A ELR, is used for AC measurement. It protects your facilities by continuously monitoring leakage current with an advanced residual current transformer. Adjustable alarm threshold 30mA-5A.
ELR-4MD DC Digital Earth Leakage Relay
Blue Jay’s ELR-4MD earth leakage monitoring relay, also known as a CBCT earth leakage relay, is used for DC measurement. It detects leakage current through Hall effect current transformer, core balance current transformer or CBCT. Adjustable alarm threshold 1-30mA or 5-100mA.
Why Choose Blue Jay Digital Earth Leakage Relay
Sensitivity adjustable up to 5A, Wide Range of Leakage current t alarm threshold 30mA-5A/1-30mA/5-100mA.
Adjustable trip time delay ranges from 50ms to 10 seconds.
Pre trip LED indication.
Positive/negative security, power fail/alarm contacts, & local/remote testing. Protects against Type AC, A, F, & B earth leakage faults.
Tested in accordance with IEC standards: IEC 60255-27,IEC 60255-26, IEC 60255-1, IEC 60255-21.
Blue Jay Digital Earth Leakage Relay Applications
Our ELR earth leakage relay offers leakage protection for LV control panels and switchboards, feeders, motors, generators, transformers, and mobile equipment. It’s also built for tough and sensitive locations like oil refineries, cement and chemical plants, steel mills, pulp and paper industries, general electrical distribution, as well as mining and control engineering. In short, it’s ideal for Motor Control Centers (MCCs) and general electrical distribution boards and control panels.
ELR Relay Accessories
Earth Leakage Current Transformer provides Earth Leakage Protection & Measurement for Low Voltage and is used with different ELR earth leakage relay. In the market, there are many types of earth leakage CT such as type A, Type B, core Balance CT/ring type CT, zero phase CT (ZCT), etc.
Frequently Asked Questions
What is the difference between ELR and ELCB?
What is the range available in Blue Jay earth leakage relay?
Blue Jay offers variants in Earth Leakage Relay as DC or AC.
What is the leakage current range in the Blue Jay earth leakage protection relay?
It has a wide range of selectable Earth leakage current: 1-30mA / 5-100mA/30mA-5A.
What compliances does Blue Jay AC or DC earth leakage relay follow?
The entire range of Earth Leakage Monitoring Relays is IEC approved.
What is the auxiliary power supply range for the Blue Jay din rail earth leakage relay?
Blue Jay offers a wide range of supply range; 85-265 VAC/DC.
Chongqing Blue Jay Technology Co., Ltd. was founded by engineers with many years of experience. Focuses on the development, production and sales of power automation monitoring products and energy metering instruments.
1802, Building 2, No. 88, Jianxin East Road, Chongqing City, 400020, China
Liandong U valley Industrial Park,Hangzhou City, China
Jiangyin High-tech Zone, Jiangyin City, China